Antifunctional? I love it when creationists make up words to sound like they know what they're talking about.
How would a set of gradually improving feathers or bones be "antifunctional" every step of the way towards flight?
They don't need everything to fly, they just need everything on your checklist in order to fly well. The idea is that they flew poorly at first, and eventually got better at it.
And the idea that evolution has been somehow disproven or dscredited is ludicrous.
You need everything on the list just to fly poorly. Picture some bird with half-formed flight feathers or with the flight feathers but not the system which lets them rotate open like venetian blinds on upstrokes. He wouldn't get off the ground.